Spin current pumping in helical Luttinger liquids

Abstract

We study the DC spin current induced into an unbiased quantum spin Hall system through a two-point contacts setup with time dependent electron tunneling amplitudes. By means of two external gates, it is possible to drive a current with spin-preserving and spin-flipping contributions showing peculiar oscillations as a function of pumping frequency, electron-electron interaction and temperature. From its interference patterns as a function of the Fabry-Perot and Aharonov-Bohm phases, it is possible to extract information about the helical nature of the edge states and the intensity of the electron-electron interaction.

11 pages, 8 figures

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• Poissonian tunneling through an extended impurity in the quantum Hall effect

Cited by in corpus (26)

• Interference induced thermoelectric switching and heat rectification in quantum Hall junctions
• Spin-thermoelectric transport induced by interactions and spin-flip processes in two dimensional topological insulators
• Coulomb blockade microscopy of spin density oscillations and fractional charge in quantum spin Hall dots
• Electronic Hong-Ou-Mandel interferometry in two-dimensional topological insulators
• Photoexcitation of electron wave packets in quantum spin Hall edge states: effects of chiral anomaly from a localised electric pulse
• Polarized heat current generated by quantum pumping in two-dimensional topological insulators
• Spin textures of strongly correlated spin Hall quantum dots
• Transport phenomena in helical edge states interferometers. A Green's function approach
• Electronic quantum optics beyond the integer quantum Hall effect
• Magnetic AC control of the spin textures in a helical Luttinger liquid
• Interaction effects in a multi-channel Fabry-Pérot interferometer in the Aharonov-Bohm regime
• Interplay between Rashba interaction and electromagnetic field in the edge states of a 2D topological insulator
• Proposal for an ac spin current source
• Coherent Single Spin Source based on topological insulator
• Effects of disorder on electron tunneling through helical edge states
• Platforms for the realization and characterization of Tomonaga-Luttinger liquids
• Transport via double constrictions in integer and fractional topological insulators
• Interaction effects in non-equilibrium transport properties of a four-terminal topological corner junction
• Transport signatures of a Floquet topological transition at the helical edge
• Fractional quantization of charge and spin in topological quantum pumps
• Anisotropic Fabry-Pérot resonant states confined within nano-steps on the topological insulator surface
• A topological current divider
• Transport in quantum spin Hall edges in contact to a quantum dot
• Hybrid interacting quantum Hall thermal machine
• Photo-assisted current in the fractional quantum Hall effect as a probe of the quasiparticle operator scaling dimension
• Spin Hall and Edelstein effects in a ballistic quantum dot with Rashba spin-orbit coupling